Stack turning apparatus with multiple drive means to straighten and eject stack from turntable

摘要

An apparatus for forming stacks of flat objects 12, in particular printed products, comprises a compartment 10 which is mounted for selective rotation about a vertical axis and whose compartment space 10′ is bounded on two mutually opposite sides by bounding elements 68, 72. In the ejection direction A, the compartment is bounded by upstream guide elements 66 and downstream guide elements 70. The flat objects 12 are fed to the compartment 10 from above and come to lie in a stack formed on the compartment base 28. The upstream guide elements 66 and downstream guide elements 70 can be moved independently of one another in order, firstly, to permit the ejection of the stack formed and, secondly, to permit the stacked objects 12 to be held firmly during the rotation of the compartment 10.